Either canola oil or  peanut oil should work great, canola oil is generally less  expensive of the two and considered the healthiest, but peanut oil  is often recommended because of the flavor it gives fried foods.   Answer2: I actually read that coconut oil is the best for frying  and olive and avocado oil are excellent choices as well.
So in conclusion: while R itself is mostly written in C (with hefty chunks in R and Fortran), R packages are mostly written in R (with hefty chunks written in C/C++). librestats: How Much of R is Written in R Part 2: Contributed Packages. Posted by David Smith at 14:57 in developer tips, R | Permalink.
R programming language A discipline of software development that follows a specific structure that is designed to simplify and expedite the process of developing new software. Kent Beck developed Extreme Programming to be used with small teams of developers who need to develop software quickly in an environment of rapidly-changing requirements.